Save text file UTF-8 encoded with VBA

I found the answer on the web:

Dim fsT As Object
Set fsT = CreateObject("ADODB.Stream")
fsT.Type = 2 'Specify stream type - we want To save text/string data.
fsT.Charset = "utf-8" 'Specify charset For the source text data.
fsT.Open 'Open the stream And write binary data To the object
fsT.WriteText "special characters: äöüß"
fsT.SaveToFile sFileName, 2 'Save binary data To disk

Certainly not as I expected...

You can use CreateTextFile or OpenTextFile method, both have an attribute "unicode" useful for encoding settings.

object.CreateTextFile(filename[, overwrite[, unicode]])        
object.OpenTextFile(filename[, iomode[, create[, format]]])

Example: Overwrite:

CreateTextFile:
 fileName = "filename"
 Set fso = CreateObject("Scripting.FileSystemObject")
 Set out = fso.CreateTextFile(fileName, True, True)
 out.WriteLine ("Hello world!")
 ...
 out.close

Example: Append:

 OpenTextFile Set fso = CreateObject("Scripting.FileSystemObject")
 Set out = fso.OpenTextFile("filename", ForAppending, True, 1)
 out.Write "Hello world!"
 ...
 out.Close

See more on MSDN docs

This writes a Byte Order Mark at the start of the file, which is unnecessary in a UTF-8 file and some applications (in my case, SAP) don't like it. Solution here: Can I export excel data with UTF-8 without BOM?